“…The more general aspect of psychological consideration of motor phenomena is available through such references as are listed in the section on motor responses of Psychological Abstracts and the similar section of Psy- 1 Since in personal communications the original author signs his name as shown here, this spelling has been utilized throughout this article, though it is in contrast with other spellings of his name encountered in bibliographic references. 2 Appreciation is extended to Dr. E. A. Doll who encouraged this study and offered valuable suggestions. 3 Now with Guidance Center, Department of Corrections, San Quentin, Calif.…”